Scrutinizer can make certain simple fixes automatically. These simple fixes are mostly coding-style fixes like for PSR1/PSR2 and removing unused use statement (see a full list of available auto-fixes).
Sometimes you would like to avoid a certain change. This required you to apply the patch locally and then search the unwanted change and revert it manually.
To ease the usage of this feature, you can now also revert changes through the web interface very easily: